Phycologia australica; or, A history of Australian sea weeds ..and a synopsis of all known Australian Algae .. . fructification has yet been observed. I am indebted to Dr. Bonder for a fragment of Preisss ori-ginal specimen, and to my often-mentioned and liberal friendGeorge Clifton, for the specimen here drawn, and others in va-rious states. All bear the marks of long exposure to theweather, and are much faded. As the cystocarpic fruit of Thamnodonimn is still unknown,the exact affinities of the genus cannot be determined, but thestructure of the frond is so similar to that of the denser gene
Phycologia australica; or, A history of Australian sea weeds ..and a synopsis of all known Australian Algae .. . fructification has yet been observed. I am indebted to Dr. Bonder for a fragment of Preisss ori-ginal specimen, and to my often-mentioned and liberal friendGeorge Clifton, for the specimen here drawn, and others in va-rious states. All bear the marks of long exposure to theweather, and are much faded. As the cystocarpic fruit of Thamnodonimn is still unknown,the exact affinities of the genus cannot be determined, but thestructure of the frond is so similar to that of the denser generaof Gelidiacece, particularly of the group Chcetangiece, that I havelittle hesitation in associating it with that family. At any rateit is far removed from Polyphacum, with which Agardh placedthe species known to him. Fig. 1. Tii.\MNocLONiUM FLABELLiFORME,—the natural size. 2. Transverseslice through one of the fibres of the spongy network, showing two axes,sunk in a common cellular substance, and which would probably be resolvedinto two fibres, the cellular matrix disappearing ?—magntjied. Plai^^ CIIV. Tincmt. Brooks, Iinp Ser. KHODOSPERMEiK. Fam. Gelidiacea? Plate CXIV. THAMNOCLONIUM LEMANNIANUM, Harv. Gen. Char. Frond dendroid or flabelliform, compressed or plane, imper-fectly costate, rigidly horny or coriaceous, mostly covered with spi-nous tubercles, composed of two strata; the medullarij stratum verydense, of slender, cylindrical, longitudinally seriated cellules; corticalof roundish-angular, coloured cells. Fructification: 1, Ci/stocarps?;2, cruciate tetraspores, contained in nemalhecia.—Thamnoclonium{Kiitz.), from Oafxvo<i, a shrub, and k\cov, a branch. Frons dendroidea v. flabelliformh, conipressa v. plana, immose costata, rigidecornea et corlacea, scepissime spbmloso-verrucosa, strath daobus coniposita;strata medullari densisslmo, cellulis cyliudraceis gracilibus lomjitiidlnaliterseriatis; corticali cellulis rotundato-angidatls coloratis formato. Fruct.: 1,
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Keywords: ., bookauthorharveywi, bookcentury1800, bookdecade1850, bookyear1859
